Stage 2 ECU tune that provides the necessary calibration for aftermarket downpipes and aggressive exhaust crackles while maintaining Stage 1 power levels for 2017-2020 Audi B9 S4, S5, and SQ5 models.
Stage 3 Plus ECU tune that adds an upgraded HPFP, injectors, and 4-bar MAP sensors alongside hybrid turbos to unlock a massive 739 horsepower and 710 lb-ft of torque for 2017-2020 Audi B9 S4, S5, and SQ5 models.
Stage 1 ECU tune that unleashes up to 505 horsepower and 585 lb-ft of torque for 2017-2020 Audi B9 S4, S5, and SQ5 models directly from your smartphone.
Stage 3 ECU tune designed for TTE810 or Pure750 hybrid turbo upgrades on stock fueling to deliver track-ready performance for 2017-2020 Audi B9 S4, S5, and SQ5 models directly from your smartphone.
Designed with extreme performance in mind and manufactured from billet aluminum and high-durometer Density Line rubber for better ride characteristics than polyurethane.
2X Entries Into Our F80 M3 Sweepstakes
Brand:
ES#:
4846365
Mfg#:
034-509-0095
Ships in 2 Business Days
ON SALE!
SAVE 14%
$677.00
This product was last offered at the strikethrough price on 08-17-2026
Say goodbye to your locked "401" bootloader thanks to Unitronic new TCU Unlock Tools which are seamlessly integrated with the UniCONNECT+ flashing application for end-users.
Lock down your Audi B9 or B9.5's drivetrain and eliminate rear-end slop during hard launches with this premium billet aluminum differential bushing insert kit.
Put your power to the wheels where it belongs, and keep drivetrain components mounted securely for comfort and safety. Our Drivetrain Components Section has a huge assortment of parts and fluids for transmissions, differentials, driveshafts, drivetrain mounts, drivetrain bushings, and drive hubs, plus special tools to make repairs easy.
Lifetime Replacement
